Canonically, eleven princes (current and former) have been introduced in the series.

Wapol was formerly the prince of the former Drum Kingdom; he was spoiled by his kind and benevolent father, a stepping stone to his anarchy.[13] When his father died, he ascended to the throne, only to flee a pirate attack and then be deposed by his people. He is now the king of the Black Drum Kingdom.

Bellett was the first prince to be introduced in the series as a prince. After becoming a pirate and seeking revenge against Emporio Ivankov, Ivankov transformed him into a woman using his devil fruit powers. Last seen in Impel Down, Bellett’s current status and whereabouts are unknown.[14]

Fukaboshi, Ryuboshi and Manboshi are, respectively, the first, second, and third princes of the Ryugu Kingdom.[2] They were the first current princes to be introduced in the series, and are considered the strongest fighters in their kingdom’s army.

The four sons of the Vinsmoke Family are the princes of the Germa Kingdom.[15] Technically the first prince to debut in the series, Vinsmoke Sanji was the kingdom’s third prince, until he renounced his royal status when he left the kingdom 13 years ago and after Big Mom's betrayal.[16] His brothers, Vinsmoke Ichiji, Vinsmoke Niji, and Vinsmoke Yonji, are the first, second, and fourth princes respectively due to their family and kingdom’s aggressive imperialism. Their primary duty as princes is to act as war commanders for their nation’s military, Germa 66.

Loki is the prince of Elbaf. So far, he has only been introduced by name, and is yet to make his debut. He had sufficient political influence and privilege to propose to the 23rd daughter of Charlotte Linlin, who is deeply hated by the giants, and had the wedding succeeded, it would have ended the long-lasting grudge against Linlin. Conversely, when Linlin attempted to deceive Loki for failing to deliver Lola as the bride, the giants came to detest her even more for offending their prince.[17]

Cavendish was the former prince of the Bourgeois Kingdom. However, his exceeding popularity among the women of the kingdom resulted in none of them being willing to marry. As a result, he was run out of the kingdom with "only" 74 servants and 500 million.[18]